LEARN HOME
SENSORS
293 GUIDES | 1747 PAGES | 7 FEATURED | 24 POPULAR
BIOMETRIC CAMERA FORCE & FLEX GPS LIGHT PROXIMITY RFID / NFC TEMPERATURE & HUMIDITY WEATHER

Explore the interesting MicroBlocks programming environment by making a winter ornament.
MicroBlocks Circuit Playground Express Ornament
by Dave Astels
Keep your plants happy with an I2C temperature/moisture sensor
Adafruit STEMMA Soil Sensor - I2C Capacitive Moisture Sensor
by lady ada
Monitor aquarium pH continuously using reef-pi
reef-pi Guide 6: pH Monitoring
by Ranjib Dey
Make spooky, pumpkiny sounds this Halloween!
Jack-o-Theremin
by Sophy Wong
Comparison of the metal oxide MQ-3 and MiCS5524 gas sensors
Comparison and Experimentation with Flammable Gas Sensors
by Kevin Walters
Do you have a HalloWing left over from Halloween? If you have a left over black cat as well, this is the project for you!
HalloWing Interactive Cat Toy
by Dave Astels
An I2C-interface temperature & humidity sensor in a nice enclosed style!
AM2315 - Encased I2C Temperature/Humidity Sensor
by Kattni Rembor
Find your friends with LoRa, GPS, and a compass module.
Glitter Positioning System
by Brennen Bearnes
Maintain consistent water level and salinity in aquariums using reef-pi
reef-pi Guide 4: Water Level Controller
by Ranjib Dey
Scare someone with a rubber spider or roach dropped right in front of their face! HalloWing with a PIR sensor and servo motor do your scaring for you!
HalloWing Jump Scare Trap
by John Park
A real UVA + UVB light sensor with UV Index calculations
Adafruit VEML6075 UVA / UVB / UV Index Sensor
by lady ada
A ported pressure sensor
Adafruit MPRLS Ported Pressure Sensor Breakout
by lady ada
Controlling aquarium temperature with reef-pi
reef-pi Guide 3: Temperature Controller
by Ranjib Dey
Answer any question with a shake of the Magic 9 Ball!
HalloWing Magic 9 Ball
by John Park
Learn to control AC equipment using reef-pi
reef-pi Guide 2: Power Controller
by Ranjib Dey
Using MakeCode on the Circuit Playground Express to measure distance with an HC-SR04 ultrasound sensor.
Distance Measurement with Ultrasound
by Kevin Walters
Installation and configuration of reef-pi, the open source reef tank controller, capable of automating AC equipment, DC pumps, LED lights and more
reef-pi Guide 1: Setup and Demonstration
by Ranjib Dey
Use the accelerometer on your Circuit Playground Express to detect movement
Make It Shake, Rattle, and Roll: Accelerometer Use
by Mike Barela
Use a Crickit and Circuit Playground Express to heat or cool items.
Make It Hot or Cold
by Mike Barela
This skull is keeping an eye on you...
HalloWing All-Seeing Skull
by John Park
Protect against intruders by building a security system for a cardboard smart home using Adafruit IO.
Adafruit IO Home: Security
by Brent Rubell
Help your compost THRIVE with this waterproof, Circuit Playground, powered smart compost machine
Compost Friend!
by Isaac Wellish
Build an internet-enabled environmental monitor to see what's in the air you breathe using Arduino or CircuitPython
Adafruit IO Environmental Monitor for Feather or Raspberry Pi
by Brent Rubell
Send and receive messages using IR with your Circuit Playground Express!
Infrared Receive and Transmit with Circuit Playground Express
by Kattni Rembor